Uitbarsting vulkaan IJsland #13: dooie boel.

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Op donderdag 29 april 2010 15:51 schreef djayzz het volgende:
Volgens mij zeggen die stippen niet zo heel veel.. althans, er volgt niet zo heel veel actie uit, behalve hier op het forum

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Op donderdag 29 april 2010 15:51 schreef djayzz het volgende:
Volgens mij zeggen die stippen niet zo heel veel.. althans, er volgt niet zo heel veel actie uit, behalve hier op het forum

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Op donderdag 29 april 2010 15:57 schreef Frutsel het volgende:
En hoe vaak waren die stippen zichtbaar 'voordat' we hier gezellig zaten te keuvelen dan?

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Op donderdag 29 april 2010 15:57 schreef Frutsel het volgende:
En hoe vaak waren die stippen zichtbaar 'voordat' we hier gezellig zaten te keuvelen dan?

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Op donderdag 29 april 2010 15:57 schreef djayzz het volgende:

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dat bedoel ik.

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Op donderdag 29 april 2010 16:46 schreef Drumfire het volgende:

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Misschien moet je sowieso niet uitgaan van alle vulcanologen hier op het forum

Als de mensen die ervoor geleerd hebben al moeite hebben om te voorspellen wanneer een vulkaan uitbarst, lijkt het me niet dat wij hier op basis van een paar grafiekjes kunnen vertellen wanneer het wel gaat gebeuren.

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Op donderdag 29 april 2010 16:49 schreef djayzz het volgende:

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Fok!kers zijn wel uitermate goed hoor

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Op donderdag 29 april 2010 16:03 schreef Katlaah het volgende:
Ik moet jullie teleurstellen
Ik ben vannacht gewoon een paar keer uit me bed gevallen, en dat rommelt altijd een beetje....
Had een paar nachtmerries over betonnen ballen in me strot

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Op donderdag 29 april 2010 17:05 schreef Frutsel het volgende:

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Topic kan dus wel op slot, tot er meer nieuws is

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Op donderdag 29 april 2010 16:46 schreef Drumfire het volgende:

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Misschien moet je sowieso niet uitgaan van alle vulcanologen hier op het forum

Als de mensen die ervoor geleerd hebben al moeite hebben om te voorspellen wanneer een vulkaan uitbarst, lijkt het me niet dat wij hier op basis van een paar grafiekjes kunnen vertellen wanneer het wel gaat gebeuren.

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Op donderdag 29 april 2010 17:20 schreef Eyjafjallajoekull het volgende:

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Dus dan bepaald 1 mod wanneer iets 'nieuws' is .Kut zeg als die ligt te slapen en Katla barst net uit

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Op donderdag 29 april 2010 17:31 schreef Katlaah het volgende:

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Kan, of ik wordt gewoon een mod en open dan weer dit topic

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Op donderdag 29 april 2010 18:17 schreef Burner82 het volgende:

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Daar hoef je niet eens een mod voor te zijn, zelfs ik kan dat

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Op donderdag 29 april 2010 18:20 schreef kahaarin het volgende:

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Huh?! Als Fruts een topic sluit kun jij dat weer openen? Ik dacht het toch niet hoor.

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Op vrijdag 30 april 2010 07:11 schreef Burner82 het volgende:

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Nee, ik open dan een ander, maar toch weer hetzelfde topic

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Many Volunteers Help Clean Ash in South Iceland

^{The cleaning begins. Around 100 people, including search and rescue team members, volunteered to help out with the ash cleaning last weekend. Photo by Benedikt Jķhannesson.}
At least 100 people have volunteered to help clean ash from farms and other inhabited areas below the Eyjafjöll mountain range this weekend that were subject to the most extensive ash fall from the volcano in Eyjafjallajökull glacier.

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Eruption in Eyjafjallajökull - Status Report: 18:00 GMT, 29 April 2010
Icelandic Meteorological Office and Institute of Earth Sciences, University of Iceland
Compiled by: MJR / HB / MTG / SSJ / GS / BO

Based on: IMO seismic monitoring; IES-IMO GPS monitoring; IMO river gauges; web cameras of the eruption site from Vodafone, Mila, and Múlakot; IMO weather radar measurements; information from the local police; and aerial observations from a scientific flight with the Icelandic Coastguard (observation plane TF-SIF).

Eruption plume:
Height (a.s.l.): Not visible above clouds at 3.6–5.1 km (12–17,000 ft), but most likely below 3.6 km (12,000 ft). Before the overflight this morning, the eruption plume was not seen on radar images from Keflavík, nor on satellite images.
Heading: West and possibly southwest from the eruption site, but probably remaining close to Eyjafjallajökull due to light winds.
Colour: Cloud-cover obscured direct observations.
Tephra fallout: Light, fine-grained ash-fall reported in the morning during rain at
Ásķlfsskáli, located 10.5 km south-west of the eruption site. Similar conditions also reported from a farm 12 km south-southwest of the eruption site at 15:00 GMT.
Lightning: Four lightning strikes detected over the summit of Eyjafjallajökull between 19:47 and 20:03 GMT on 28 April.
Noises: Booming sounds were reported yesterday evening, and again this morning, from Selsund, located ~40 km north-northwest of the eruption site.
Additional note: 16:13 GMT:Asulphur smell was detected at 3 km a.s.l. (10,000 ft) by pilots on a passenger flight 50–60 nautical miles east of Keflavík Airport.

Meltwater: Web-camera views show continued discharge of water from Gígjökull due to lava-ice interactions. On 28 April, the discharge of Markarfljķt was measured twice at the old bridge, ~18 km downstream from Gígjökull. The flood that began at Gígjökull at ~11:30 GMT yesterday reached a peak discharge of 250 m3 s–1 two hours later at the bridge. Both yesterday and today, mean discharge from Gígjökull was 130–150 m3 s–1, which is higher than in previous days. The electrical conductivity of Krossá and Steinholtsá remains high (see report from 28 April for details).

Conditions at eruption site:
Airborne radar surveys from TF-SIF show a well-formed crater. Lava is spreading northward from the crater toward the head of Gígjökull. Ice continues to be melted by the propagating lava
front.

Seismic tremor: Intensity comparable to the preceding six days of eruptive activity.

Earthquakes: At 13:10 GMT, an Ml 1.5 earthquake was detected at shallow depth beneath the summit caldera; it is possible that this earthquake was a seismic explosion from the erupting crater.

GPS deformation: Horizontal displacement towards the centre of the volcano, in addition to vertical subsidence. These observations are consistent with deflation of a magma reservoir
beneath Eyjafjallajökull.

Magma flow: No measurements possible today.

Other remarks: No measurable geophysical changes within the Katla volcano.

Overall assessment: Plume elevations and magma discharge levels remain similar to the preceding six days of activity. Lava continues to flow north from the eruption site toward the head of the Gígjökull glacier. Today's explosive activity and ash production represents a fraction of conditions during the height of the eruption (14–17 April). Presently, there are no measurable indications that the eruption is about to end.

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Op vrijdag 30 april 2010 15:17 schreef Mountainwatcher het volgende:
Zeggen die drie aarbevingen op de Katla niets dan?

http://en.vedur.is/earthquakes-and-volcanism/earthquakes/

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Eruption in Eyjafjallajökull - Status Report: 17:00 GMT, 30 April 2010
Icelandic Meteorological Office and Institute of Earth Sciences, University of Iceland
Compiled by: MJR / MTG / FS / GS / SSJ

Based on: IMO seismic monitoring; IES-IMO GPS monitoring; IMO hydrological data; web cameras of the eruption site from Vodafone, Mila, and Múlakot; IMO weather radar measurements; information from scientists at Gígjökull; and aerial observations from the Icelandic Coastguard (observation plane TF-SIF).

Eruption plume:
Height (a.s.l.): Detected by weather radar at 15:20 GMT at an elevation of 2.8 km over the eruption site. TF-SIF observations at 15:40 GMT confirmed a steam plume rising to 4.5–5.1 km (15–17,000 ft). Clouds of ash at lower elevations observed drifting south of the eruption site.
Heading: South and south-west from the eruption site, but probably remaining close to Eyjafjallajökull due to light winds.
Colour: White (steam) clouds at higher elevation; dark grey (ash) clouds seen intermittently at lower elevation (see above).
Tephra fallout: Dark, fine-grained ash-fall reported over a 10 km region south of Eyjafjallajökull between Núpur and Skķgar.
Lightning: No detections today over the eruption site (17:00 GMT).
Noises: Booming sounds reported in the vicinity of Eyjafjallajökull.

Additional note: Plumes of white plume were noticed over Gígjökull (15:40 GMT); this steam probably represents the position of the northward-flowing lava flow.

Meltwater: Web-camera views show continued discharge of water from Gígjökull due to lava-ice interactions. At 05:00 GMT a flood was detected leaving the Gígjökull lake basin. The flood reached a maximum discharge about two hours later at the old bridge over Markarfljķt, ~18 km downstream. The flood was comparable in size to yesterday's gauged flows. At 14:00 GMT, meltwater flow beneath the bridge was ~200 m3 s–1. Discharge from Gígjökull decreased during the afternoon. Steaming blocks of rock are being deposited in the Gígjökull basin; these blocks are probably solidified lava from eruption. The electrical conductivity of Krossá and Steinholtsá remains high (see reports from 28 and 29 April for details).

Conditions at eruption site:
Airborne radar surveys from TF-SIF show a well-formed crater. Lava is spreading northward from the crater toward the head of Gígjökull. Ice continues to be melted by the propagating lava front.

Seismic tremor: Intensity comparable to the preceding six days of eruptive activity.

Earthquakes: No locatable seismicity detected beneath Eyjafjallajökull.

GPS deformation: Horizontal displacement towards the centre of the volcano, in addition to vertical subsidence. These observations are consistent with deflation of a magma reservoir beneath Eyjafjallajökull.

Magma flow: No measurements possible today.

Other remarks: No measurable geophysical changes within the Katla volcano.

Overall assessment: Plume elevations and magma discharge levels remain similar to the preceding seven days of activity. Lava continues to flow north from the eruption site and down the Gígjökull glacier. Today's explosive activity and ash production represents a fraction of conditions during the height of the eruption (14–17 April). Presently, there are no measurable indications that the eruption is about to end.

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The eruption of Iceland’s Eyjafjallajökull set geologists on frantic runs to monitor possible volcano eruptions

Next on their radar is volcano Vesuvius located in the Bay of Naples, Italy.

Italian volcanologists are keeping track of two active sites after Guido Bertolaso, the president of Italy’s Civil Protection Department, announced that there is a possibility that the island of Ischia, a close neighbor of Vesuvius, will erupt very soon.

An estimated 650,000 people inhabit the slopes of Vesuvius and are at high risk. Due to the potentially detrimental effects of the island’s volcanos, the Italian minister called for a reevaluation of the emergency response team in the region around the two volcanoes. Up to 1 million people may need to be evacuated.

Katla, another volcano in Iceland is also under surveillance, according to recent speculations that Eyjafjallajökull might have upset Katla’s 92-year-long sleep.The reason for the prediction is historical evidence that the previous three times Eyjafjallajökull erupted, Katla followed.

“As bad as Eyjafjallajökull is, Katla could be much, much worse,” said Jay Miller, manager of Technical & Analytical Services at the A&M University in Texas, according to the Texas A&M University website.

Other volcanoes that are also getting special attention now include Mauna Loa, Hawaii; Sakurajima and Mount Hokodate-yama both in Japan; St. Helens, Washington; and Popocatepelt, Mexico.

Most of these volcanoes are among the most active in the world, so geologists have been watching them since their formation.

According to AFP, Bertolaso said, "Unfortunately, no one in the world can predict when a volcano will wake up … or predict an earthquake. There's a week or 10 days from the first signs until the moment it's too late